Re: [PATCH 0/7] Optimization to improve cpu online/offline on Powerpc

2020-07-29 Thread Satheesh Rajendran
On Mon, Jul 27, 2020 at 01:25:25PM +0530, Srikar Dronamraju wrote: > Anton reported that his 4096 cpu (1024 cores in a socket) was taking too > long to boot. He also analyzed that most of the time was being spent on > updating cpu_core_mask. > > Here are some optimizations and fixes to make

[PATCH 0/7] Optimization to improve cpu online/offline on Powerpc

2020-07-27 Thread Srikar Dronamraju
Anton reported that his 4096 cpu (1024 cores in a socket) was taking too long to boot. He also analyzed that most of the time was being spent on updating cpu_core_mask. Here are some optimizations and fixes to make ppc64_cpu --smt=8/ppc64_cpu --smt=1 run faster and hence boot the kernel also